feat: trigger actions from md-select. (#716)

Author: queenvictoria

addon/components/md-select.js

@@ -51,6 +51,20 @@ export default MaterializeInputField.extend({
     // jscs: enable
   },
 
+  actions: {
+    optionSelected(e) {
+      const target = e.target;
+      if (!this.get('isDisabled')) {
+        if (this.get('action')) {
+          this.sendAction('action', target.value);
+        }
+        else {
+          this.set('value', target.value)
+        }
+      }
+    }
+  },
+
   // TODO: this could be converted to a computed property, returning a string
   //  that is bound to the class attribute of the inputSelector
   errorsDidChange: observer('errors', function() {

addon/templates/components/md-select.hbs

@@ -1,6 +1,6 @@
 <label id="{{id}}" class="active">{{label}}</label>
 
-<select onchange={{action (mut value) value="target.value"}}
+<select onchange={{action 'optionSelected'}}
         class="{{if validate 'validate'}} {{if errors 'invalid' 'valid'}}"
         disabled={{if disabled "true"}}>
   {{#if prompt}}